2005 C6 Torque/hp Limits
Thread Starter
Drifting
Joined: Jan 2006
Posts: 1,560
Likes: 3
From: FNDA Beach Florida
2005 C6 Torque/hp Limits
Can anyone tell me what is the safe HP/Torque limit the rear end and tranny will handle on an A4/C6? Also has anyone had the tune done at Texas Speed and what were your thoughts on that, worth it, problems? 
Pro
Joined: Dec 2005
Posts: 581
Likes: 0
From: New Jersey
I'm not an expert in this field by any means, however I have heard that the A4/A6 transmission is safe up to 500 horse and 500 torque, give or take. Lingenfelter offers auto transmission upgrades for any mods that push the car over 500 horse.
Once again, I am not sure on the exact numbers, but I think this is a good estimate. Don't rely on this information to be accurate to do mods, as I take no responsibility for anything that may go wrong.
Once again, I am not sure on the exact numbers, but I think this is a good estimate. Don't rely on this information to be accurate to do mods, as I take no responsibility for anything that may go wrong.
Team Owner
Joined: Apr 2005
Posts: 27,596
Likes: 0
From: YOU SEE ... I'M NOT CRAZY ...I'M JUST AHEAD OF THE CURVE
St. Jude Donor '09-'10
Originally Posted by JAB210
I'm not an expert in this field by any means, however I have heard that the A4/A6 transmission is safe up to 500 horse and 500 torque, give or take. Lingenfelter offers auto transmission upgrades for any mods that push the car over 500 horse.
Once again, I am not sure on the exact numbers, but I think this is a good estimate. Don't rely on this information to be accurate to do mods, as I take no responsibility for anything that may go wrong.
Once again, I am not sure on the exact numbers, but I think this is a good estimate. Don't rely on this information to be accurate to do mods, as I take no responsibility for anything that may go wrong.
I am pretty sure the GM line is 500/500.
Race Director
Joined: Sep 1999
Posts: 12,439
Likes: 921
From: CONCORD NC
It all depends on traction, doesn't it. At 400hp, in first gear, your applying around 3600ft-lbs of torque to the rear axles (400*3*3). If you put slicks on your car, you can brake a diff with a stock engine if you abuse it enough.
Use your head, avoid abuse, and you'll be fine. I've never broken a drivetrain part with constant 7500rpm shifts, and 550hp.
Use your head, avoid abuse, and you'll be fine. I've never broken a drivetrain part with constant 7500rpm shifts, and 550hp.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
5 Best & 5 Worst Corvette Daily Drivers
Joe Kucinski
The Headlights of Every Corvette Generation Explained
Joe Kucinski
5 Best & 5 Most Overrated Corvette Track Packages of All Time!
Joe Kucinski
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
